Prime & Composite Worksheet
Recommended for 4th Grade — 6th Grade
Prime & Composite Worksheet
Name: ____________________Date: ____________
Instructions: Identifying prime and composite numbers and writing prime factorizations.
20 problems
- Prime numbers in {3, 11, 15, 19, 13, 17} → ______
- Prime numbers in {23, 2, 21, 29, 11, 7} → ______
- Prime numbers in {25, 3, 9, 2, 29, 5} → ______
- Prime numbers in {23, 12, 21, 27, 25, 5} → ______
- Prime numbers in {5, 15, 11, 2, 13, 29} → ______
- Prime numbers in {15, 19, 21, 9, 25, 13} → ______
- Prime numbers in {2, 27, 29, 15, 21, 23} → ______
- Prime numbers in {21, 9, 19, 5, 2, 29} → ______
- Prime numbers in {27, 5, 11, 9, 21, 29} → ______
- Prime numbers in {12, 13, 25, 27, 3, 19} → ______
- Prime numbers in {19, 9, 8, 17, 3, 12} → ______
- Prime numbers in {13, 12, 7, 8, 25, 27} → ______
- Prime numbers in {23, 29, 12, 21, 8, 9} → ______
- Prime numbers in {29, 9, 19, 23, 27, 12} → ______
- Prime numbers in {15, 27, 8, 25, 13, 23} → ______
- Prime numbers in {17, 9, 13, 3, 15, 11} → ______
- Prime numbers in {3, 25, 7, 29, 11, 17} → ______
- Prime numbers in {13, 15, 17, 27, 9, 2} → ______
- Prime numbers in {5, 21, 12, 2, 19, 25} → ______
- Prime numbers in {8, 19, 12, 29, 21, 11} → ______